Manifold bolt?
Printed From: The Ford Torino Page
Category: Model Specific Forum
Forum Name: 1972-1976 Ford and Mercury
Forum Description: Technical discussion for 1972-1976 Ford and Mercury
URL: https://forum.grantorinosport.org/forum_posts.asp?TID=20286
Printed Date: 19-April-2024 at 10:22AM
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: Manifold bolt?
Posted By: Anderslober
Subject: Manifold bolt?
Date Posted: 22-July-2022 at 8:22AM
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Hi forum…qq…exhaust manifold…right side…..is there supposed to be a bolt on one side where the exhaust pipe hooks up? I had a great fight today…..still havent won!😵👍
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Replies:
Posted By: Rockatansky
Date Posted: 22-July-2022 at 10:43AM
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should be 2 studs / nuts ------------- 72 GT Ute |
Posted By: Anderslober
Date Posted: 22-July-2022 at 7:35PM
| Ok. Thanks. Someone drilled a hole for a bolt then. The other studs are not in great condition. Can they be removed and changed? |
Posted By: Rockatansky
Date Posted: 23-July-2022 at 2:43AM
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------------- 72 GT Ute |
Posted By: Rockatansky
Date Posted: 23-July-2022 at 3:15AM
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this is the Dorman number that pops up on Rockauto for our exhaust manifolds but there may be longer studs available so check what length will work for you, and verify the method of obtaining that measurement. or you may be able to source some locally? http://www.rockauto.com/en/moreinfo.php?pk=1261582&cc=1129306&pt=13936&jsn=570" rel="nofollow - https://www.rockauto.com/en/moreinfo.php?pk=1261582&cc=1129306&pt=13936&jsn=570 ------------- 72 GT Ute |
Posted By: Anderslober
Date Posted: 23-July-2022 at 3:42AM
| Wow…wax…who knew!👍 I will see what I can do. |
Posted By: Anderslober
Date Posted: 24-July-2022 at 1:31AM
Here are some pictures my cars’ right manifold…. |
Posted By: Anderslober
Date Posted: 24-July-2022 at 1:32AM
Another pic…. |
Posted By: Anderslober
Date Posted: 24-July-2022 at 1:33AM
And another…(I still dont know how to upload more than one photo in a post) |
Posted By: handsofstone
Date Posted: 24-July-2022 at 5:10AM
Just repeat the download procedure before you post reply and they will all be in the same place.
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Anderslober wrote:Posted By: Anderslober
Date Posted: 26-July-2022 at 9:35PM
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Ssshhhhuuuuccckkkss! I tried to take of the right exhaust manifold. All went well, until the very last number one cylinder upper bolt….snap….. Anyway….maybe still possible to get the bolt…..will post…
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Posted By: 72 RS 351
Date Posted: 27-July-2022 at 3:36AM
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Tip, just barely brake loose all related bolts before fully loosening any of them. The extra pressure from having some bolts out adds slightly to the others. ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: Rockatansky
Date Posted: 27-July-2022 at 11:27AM
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are you working the bolts back & forth (tight / loose) and lubing as you go? 1st move should be in the tight direction, then check it in the loose direction. smack the bolt head with a hammer and test each direction again. a 1/2" breaker bar with a quality 6 point socket is the way to go, a metric socket that fits tight beats a loose inch socket every day of the week  ------------- 72 GT Ute |
Posted By: handsofstone
Date Posted: 27-July-2022 at 6:16PM
| A six point with the little grooves at the angles will be the best bet adding to what Rock posted. Especially if they are slightly rounded off. |
Posted By: 72 RS 351
Date Posted: 28-July-2022 at 4:32AM
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Those socket and wrenches with the rounded corners used to be a Snap-On invention. Now even the cheap China tools have them. ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: Big Bird
Date Posted: 28-July-2022 at 6:40AM
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radiused corners don't really help the bolt come loose, Snap-Off patent was to reduce stress risers and broken sockets/warranty costs. They have dazzled everyone with bullsh*t about "Flank drive" for years. ------------- "What we do in full frontal view, is more honest than your cleaned-up mind." Randy 1979 T-Bird 2005 F-150 STX RCSB 4.6, 3.55 LSD How the Heck does a REGULAR CAB SHORTBED weigh over 5200 pounds? |
Posted By: Anderslober
Date Posted: 28-July-2022 at 7:55AM
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I was very careful during the operation. Yes….I slightly tightened first….then loosened…back and forth…carefully…used a full can of wd40 type fluid. The last bolt was just unlucky. The bolt looked different than the others. Greyish burnt and rough.
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Posted By: Rockatansky
Date Posted: 28-July-2022 at 12:44PM
probably chinesium ------------- 72 GT Ute |
Posted By: Anderslober
Date Posted: 28-July-2022 at 10:25PM
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If I am unable to find a right side manifold…..what is a good way to fix the drilled hole for the stud? Ideas welcome. The manifold looks really good otherwise..  |
Posted By: 72 RS 351
Date Posted: 29-July-2022 at 2:24AM
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There are repair items made to replace a broken and seized stud etc. Find those and see if they will fit onto that one side. The one I'm thinking of is like a pair of steel bars that attach by long bolts of their own, sandwiching the ear of the collector and lower flange. Kind of like a clamp, it squeezes the old flanges(the small section where the bolt is) together with the down pipe flange. They are on Amazon and I think they were about a $25 item. I believe it requires a decent flat surface on both parts to clamp onto, but you can grind and file down that worn hole area to do that. ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: Rockatansky
Date Posted: 29-July-2022 at 9:43AM
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exhaust manifold split repair flange search results, images http://www.google.com/search?q=exhaust+manifold+split+flange+repair&tbm=isch&ved=2ahUKEwjNjLPi9575AhVAkGoFHW3tD8sQ2-cCegQIABAA&oq=exhaust+manifold+split+flange+repair&gs_lcp=CgNpbWcQDDoFCAAQgAQ6BAgAEBhQhBFYjB9gmjpoAHAAeACAAb0BiAHTBZIBAzUuMpgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=zULkYo1ywKCq2w_t2r_YDA&bih=871&biw=1280&client=firefox-b-1-d" rel="nofollow - https://www.google.com/search?q=exhaust+manifold+split+flange+repair&tbm=isch&ved=2ahUKEwjNjLPi9575AhVAkGoFHW3tD8sQ2-cCegQIABAA&oq=exhaust+manifold+split+flange+repair&gs_lcp=CgNpbWcQDDoFCAAQgAQ6BAgAEBhQhBFYjB9gmjpoAHAAeACAAb0BiAHTBZIBAzUuMpgBAKABAaoBC2d3cy13aXotaW1nwAEB&sclient=img&ei=zULkYo1ywKCq2w_t2r_YDA&bih=871&biw=1280&client=firefox-b-1-d ------------- 72 GT Ute |
Posted By: 72 RS 351
Date Posted: 29-July-2022 at 10:05AM
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That's a large variety of repair solutions for broken or stripped manifold studs and bolts. This is the type I was thinking of. I thought it clamped the two parts together, but it just replaces the manifold stud with an interesting loop of steel; https://www.amazon.com/Exhaust-Manifold-Repair-Studfix-FC8001/dp/B0B34D8JGL/ref=sr_1_11?crid=20XC1KY9H7YCP&keywords=Exhaust+Manifold+Repair&qid=1659128469&sprefix=exhaust+manifold+repair%2Caps%2C1808&sr=8-11" rel="nofollow - https://www.amazon.com/Exhaust-Manifold-Repair-Studfix-FC8001/dp/B0B34D8JGL/ref=sr_1_11?crid=20XC1KY9H7YCP&keywords=Exhaust+Manifold+Repair&qid=1659128469&sprefix=exhaust+manifold+repair%2Caps%2C1808&sr=8-11 ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: handsofstone
Date Posted: 29-July-2022 at 3:48PM
| Get a straight torch tip and burn out the stud. Tap the threads. Put the rest of the bolts back in first. If the manifold hasn't moved, it will still be sealed to the head. |
Posted By: californiajohnny
Date Posted: 30-July-2022 at 12:55PM
its drilled out...i's rethread it, or if needed drill it larger and helicoil it to the correct size, or since there's room use a bolt that is long enough to go down towards the pipe (grind part of the bolt head to fit against the manifold )
------------- JOHN 74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
Posted By: Anderslober
Date Posted: 02-August-2022 at 8:22AM
I got the right exhaust manifold off today. No bloody gasket! |
Posted By: Anderslober
Date Posted: 02-August-2022 at 8:24AM
Manifold looks good. Except the drill out hole… |
Posted By: Rockatansky
Date Posted: 02-August-2022 at 1:13PM
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Ford didn't use gaskets on the X manifolds ------------- 72 GT Ute |
Posted By: Anderslober
Date Posted: 02-August-2022 at 7:48PM
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Wow…ok….that means this is original and untouched basically. I think I will put in a gasket though….
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Posted By: Anderslober
Date Posted: 03-August-2022 at 12:58AM
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Whadyasay fellas..? Just need an angled washer now…..  |
Posted By: handsofstone
Date Posted: 04-August-2022 at 7:42AM
| Run a tap and use a heli-coil (there is a better coil replacement system but I forget the name). That setup will work but you already have the manifold out so why not do the other one as well? |
Posted By: Anderslober
Date Posted: 04-August-2022 at 8:40AM
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I had to drill out the other side today. Bolt snapped after heating, whacking, drenching. No worries. Yes….tapping…..what measurement are the studs? 5/8? I will try and tap for that.
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Posted By: 72 RS 351
Date Posted: 04-August-2022 at 12:19PM
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I doubt you will be satisfied with threads tapped into a cast iron manifold, that might be a last resort I'd consider. ------------- Don 73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
Posted By: Rockatansky
Date Posted: 06-August-2022 at 5:39AM
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IIRC the replacement studs are 7/16-NC (National Course) 7/16"-14 x 2-1/4" to be exact http://www.rockauto.com/en/catalog/ford,1974,gran+torino,5.8l+351cid+v8,1129306,exhaust+&+emission,exhaust+flange+stud+and+nut,13936" rel="nofollow - - https://www.rockauto.com/en/catalog/ford,1974,gran+torino,5.8l+351cid+v8,1129306,exhaust+&+emission,exhaust+flange+stud+and+nut,13936 http://www.dormanproducts.com/p-353-03099.aspx" rel="nofollow - https://www.dormanproducts.com/p-353-03099.aspx http://www.amazon.com/Dorman-03099-Exhaust-Flange-Hardware/dp/B00068OIFO" rel="nofollow - - http://www.amazon.com/Dorman-03099-Exhaust-Flange-Hardware/dp/B00068OIFO" rel="nofollow - https://www.amazon.com/Dorman-03099-Exhaust-Flange-Hardware/dp/B00068OIFO
------------- 72 GT Ute |
Posted By: Anderslober
Date Posted: 18-August-2022 at 8:27PM
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Today is the day, where I will attempt to remove the 3 snapped bolts. 2 manifold bolts and 1 engine mount bolt. Should be fun. I dont have any welding equipment, so I will drill and use easy out.  |
Posted By: Rockatansky
Date Posted: 19-August-2022 at 7:24AM
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while you have the pan off, very important!, change the connecting rod nuts they're garbage, the threads fracture out under stress all you have to do is remove, replace, torque to spec 40-45 lb-ft IIRC 16 pieces required  ------------- 72 GT Ute |
Posted By: handsofstone
Date Posted: 19-August-2022 at 8:17AM
| Timing chain has to go as well as a new oil pump. No going back now as you are in it to win it. |
Posted By: californiajohnny
Date Posted: 19-August-2022 at 9:35AM
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do you have an acetylene torch? heat the bolt till its starting to get a spot of orange than they come out
------------- JOHN 74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
Posted By: handsofstone
Date Posted: 19-August-2022 at 10:57AM
| Also do the valve seals. |